Ribbed collection tube



FIG. 1 is a perspective view of the ribbed collection tube;

FIG. 2 is a side elevational view;

FIG. 3 is a side elevational view of the collection tube rotated 90°;

FIG. 4 is a bottom plan view of the collection tube of FIG. 2; and,

FIG. 5 is a top plan view of the collection tube of FIG. 2.

The undisclosed sides of FIGS. 2 and 3 are identical to that shown. 

The ornamental design for a ribbed collection tube, as shown and described. 